They're certainly worth keeping, despite their nervous disposition. I don't handle any of my snakes just for the fun of it, but the infernalis are the only ones that haven't become used to routine cleaning etc. Yes, the ones are my web-site are my pair, although they are considerablt bigger now.
I think that if they were handled more often they would acyually settle down more. Beautiful sub-species though. I would recommend them to anyone who loves Garters.